Thread-parting mechanism for looms.



. a l UNITED STATES PATENT OFFICE.

JAMES H., NORTHROP, OF TUSTIN, CALIFORNIA, ASSIGNOR TO DRAPER COMPANY, OF PORTLAND, `MAINE,' AND HOPEDALE, MASSACHU- SETTS.

THREAD-PARTING MECHANISM FOR LOOMS.

SPECIFICATION forming part of Letters Patent No. 681,069, dated August 20, 1901. Application filed April 29, 1901. Serial No 57,391. (No model.)

wherein the filling is automatically replenished when the shuttle-filling has failed or become exhausted to a predetermined extent, such a loom `being shown in United States Patent No. 641,763, dated January 23, 1900;

and my present invention has for its object novel means for disposing of the end of the old filling between the edge of the cloth and the shuttle when the new supply of filling is transferred, the piece of filling being severed adjacent the shuttle and the edge of the cloth, the severing at the latter point being effected usually by a thread-cutting temple and a part of my invention includes a device to engage the piece of fillingthus parted or severed and to move it out of the way, the two parts of the holder having a rubbing motion imparted thereto to gradually work the piece of filling out from between the members of the holder. l

Figure 1 is a transverse sectional view of a portion of a loom, showing in side elevation and in normal position the thread parting and holding means embodying my present invention. Fig. 2 is a top or plan viewof the novel mechanism shown in Fig. 1; but the .parting and holding means are shown in position to part and engage the filling when the lay beats up. Fig. 3 is an enlarged side elevation of the cutting blades or jaws of the parter. Fig.

p 4 is asideelevation, also enlarged, of the detail in plan of the filling-holder,partly broken out.

The Icom-frame A, breast-beam Am, lay As, the self-threading shuttle S, the filling-replenishing mechanism comprising a hopper (not shown) to hold the filling-supply b, the transferrer f', and the controlling rock-shaft 6110 to determine the time of operation of the filling-replenishing mechanism may be and are all substantially as in the patent referred to, and, as in said patent, the depending end f3 of the transferrer is provided with a dog fmxl to be engaged by a bunter 02 on the lay when a change of filling is to be effected.

A bracket A10 on the inner face of the loom side, adjacent which the filling-replenishing mechanism is located, is provided with alateral stud a, on which is fulcrumed an up- 65 turned and rcarwardly-bent arm or support `Y, a bent branch Y' constituting a shuttlefeeler to move across the shuttle-race at the entrance to the shuttle-box when the shuttle is properly boxed, the feeler Y being notched at its extremity, as at 3, (see dotted lines, Fig. 3,) a fixed cutting-blade c being secured at the uppervside of the notch, while a mov-4 able blade c' is fulcrumed at c on the feeler,

said blade having an upturned finger cz, norimally, acted upon by a spring s to maintain thel blades open, pivotal movement of the blade c' being limited by a pin 4 on thefeeler, extended into a curved slot 03 in the extension c4 of the blade. The `blades are closed to part the filling by or through the engagement of the finger c2 with some portion of the lay, and herein I have shown the ov'erhanging guard G as adapted to engage the finger when the lay comes forward, provided the support Y has been moved into operative position. 4An open stand dx is secured to the support Y by bolts 6, Fig. 1, said stand at its inner end being laterally offset and forwardly extended to form a jaw d, having abeveled inner end d'yand provided on its upper face with a seriesof holding barbs or teeth 612, (see Figs. `4 and 5,) the points of the teeth being turned toward the front of the loom.' A cooperating upper jaw e, having its rear or entrance end beveled at c', is provided on its under face with a series of retracting barbs or teeth @2, the points of which are also turned toward the front of the loom, and referring to Fig. it will be noted that the series of teeth @2 (12 alternate laterally, the teeth on one 'jaw xentering the spaces between the series of teeth on the other jaw. The jawe has alaterally-extended arm @3, provided With an extension @4 in parallelism with the jaw, but extended oppositely therefrom, and the part @3 is also provided with a tubular extension @5, having a downturned heel e6 for a purpose to be described.

The standdx is made substantially as an open grid,on which the transverse part eglof the movable jaw and the extension e4 rest and slide, it being manifest that the jaw e is movable longitudinally of the jaw d. A shouldered guide-pin Cl, mounted .in the stand, projects into the tubnlar extension 65 and is surrounded by a spring SX, one end of the spring resting against a shoulder 6 of the guide-pin, and its other end bearing upon the lateral extension @3, the normal expansion of the spring tending to maintain the jaws in the relative position shown, so that the fiaring, ends d' e' thereof Vpresent a wide mon th for the entrance of the filling when the holder is moved into operative position.

A stud y5 on the support Y extends laterally from the outer side thereof to support the long hub nof the finger n', extended up- Ward and forward to rest upon a lug m4 (see Fig. 1) on the arm mz, supported by the depending part fs of the. transferrer, the finger being rigidly held in place on the stud y5 by a suitable nut fnx, Fig. 2.

The lower end of the support Y is provided with a toe y to engage a stop aw on the bracket A10 when the support is swung into operative position..l

The operating or controlling rock-shaft 0110 has secured to it an arm (112, which extends above and engages a pin 30 on the support Y, the arm dm'having attached to it one end of a strong spring SX, the other end of which is suitably secured to the loom-frame, the spring normally holding the arm (112 and the support in the position shown in Fig. 1.

' In Fig. 2 I have shown a thread-cutting temple T, adjacent the edge of the cloth, and such temple may be oonveniently such as shown in United (States Patent No. 585,465, dated June 29, 1895, to engage and sever the filling-t, Fig. 2, when brought against the cutting mechanism of the temple by movement of the thread-holder, as will be described.

In the operation of the apparatus when the rock-shaft (110 is rocked in the direction of the arrow 40, Fig. 1, as it will be when a change .of filling bis to be effected, the arm 6212 will be raised, and the support Y, with the devices carried thereby, will be swung rearwardly on the fulcrum a by or through the movement of the dog mx into operative position in the path of the bunter 02, and the transferrerl f' wi-ll be operated in well-known manner to insert a fresh supply of filling in the shuttle and at the same time to eject the old or spent filling. As such old supply is ejected, the filling t (see Fig. 2) extends from the edge of the cloth to the shuttle, and when the filling-holder and filling-parter are moved into operative position, as has been described, the filling will enter between the blades c c' of the parter and into the flaring mouth of the jaws ol e and thence between the barbs or teeth on the opposite faces of the said jaws. As the lay completes its forward beat the guard G engages the upturned finger 02 and closes the blade c' upon its cooperating blade c, severing the filling adjacent the shuttle, and the lay-beam, as herein shown, will engage the heel e6 of the npper jaw and will move the latter rearwardly against its spring SX. This movement of the upper jaw acts through the barbs .92 thereon to draw the thread toward the bases of the jaws, and as the support Y retnrns to operative position the filling end held in the holder will be moved into position to be severed by the thread-cutting temple T. The severed piece of filling remains in the holder, and at the next change of filling the operation hereinbefore described will be repeated and a second piece .of filling will be held between the jaws of the holder; but when the jaw e is moved toward the front of the loom its barbs will act upon the first piece of filling to move it still farther toward the bases of the jaws, and finally the pieces of filling will be disoharged from between the jaws out of the way of the cloth, absolutely preventing any chance of the severed pieces being drawn into the cloth during the weaving. The holdingbarbs (12 on the lower jaw prevent the pieces of filling from moving toward the entrance of the jaws when the upper jaw moves into. normal position by expansion of its spring.

It will be understood that the return of the controlling-shaft dlo to normal position after change of filling is effected ina well-known manner, and the support Y is through the action of the arm (112 returned to its normal position, as shown in Fig. 1, and the parting and holding means will only be operated when said means are in position to operate upon the filling between the shuttle and the edge of the cloth.

Having described my invention, What I claim as new, and desire to secure by Letters Patent, is-

1. In a loom provided with filling-replenishing mechanism, means operative upon change of filling to part the filling adjacent the cloth and the shuttle, respectively, controlling means for the replenishing mechanism, and a holder for the cut piece of filling, movable by or through the operation of the controlling means into position to engage the filling between the parting means, said holder including two jaws having their opposed faces roughened, one of said jaws being movable longitudinally upon the other, and means to effect intermittent relative longitudinal movement of the jaws, to thereby work the IOO IIO

r jaws being movable longitudinally of the piece of filling between them toward the outer. ends of the jaws.

2. In a loom provided with filling-replenishing mechanism, means operative upon change of filling to part the filling adjacent the cloth and the shuttle, respectively, two jaws bodily j movable into position to engage the fillin g beiIO tween said parting means, said jaws being provided with longitudinal series of barbs upon their opposed faces, the barbs on one -jaw alternating with those upon the other ing mechanism, means operative upon change of filling to part the filling adjacent the cloth and the shuttle, respectively, two j aws bodil y movable into position to engage the filling between said pai-ting means, holding barbs on the inner face of one jaw, retracting-barbs on the opposed face of the other jaw, one of the other jaw, to work a piece of filling therebetween toward the bases of the jaws,and means to intermittingly effect relative reciprocating movement of the jaws. k

4. In a loom provided with filling-replenishing mechanism, the lay, a swinging support, a filling-parter and a filling-holder mounted thereon, means operative upon change of filling to swing the support and bring the parter and holder into position to engage the filling a between the shuttle and the cloth, the parter including blades operated by or through the 1ay,the holder including twoj aws one of which is movable longitudinally of the other, barbs on the opposed faces of thejaws, a heel on one jaw, to be engaged by the lay, to move the jaw in one direction, and a spring to return the jaw to normal position, the relative movement of the jaws acting to rub a piece of filling from the mouth of the jaws toward the bases thereof.

5. In apparatus of the class described, filling-parting means, and a holder to engage the filling adjacent said means, the holder comprising two jaws, one of which is longitudinally movable upon the other-,alternating and longitudinally-arranged series Of barbs upon the opposed faces of the jaws, and a spring to retain the jaws in normal position', the filling passing between the jaws when the latter are in operative position, relative longitndinal movement of the jaws operating to gradually rub a piece of filling therebetween toward the bases of the jaws.

6. In a loom provided with filling-replenishing mechanism, controlling means therefor, a shuttle adapted to carry a supply of filling, two thread-parters to act upon the filling of the filling-carrier to be ejected adjacent the cloth and the shuttle respectively, a fillingholder movable by or through the operation of said controlling means into position to engage the filling between the thread-parters, said holder comprising two j aws one of which is longitudinally movable relative to the other, and provided with a flaring mouth to receive the filling, a series of barbs on the op-v posed faces of the jaws, and means to effect relative longitudinal movement of the jaws to thereby gradually work a piece of filling held therebetween toward the bases of the jaws to be discharged therefrom.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

JAMES H. NORTI-IROP. 4

Witnesses:

GEo. HUNTINGTON, J. G. QUICK. 

